EP0995361B1 - Process and device for the treatment of food products like, in particular, vegetables containing impurities, i.e. fertilizers and/or pesticides - Google Patents

Process and device for the treatment of food products like, in particular, vegetables containing impurities, i.e. fertilizers and/or pesticides Download PDF

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Publication number
EP0995361B1
EP0995361B1 EP99490030A EP99490030A EP0995361B1 EP 0995361 B1 EP0995361 B1 EP 0995361B1 EP 99490030 A EP99490030 A EP 99490030A EP 99490030 A EP99490030 A EP 99490030A EP 0995361 B1 EP0995361 B1 EP 0995361B1
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Prior art keywords
liquid
impurities
food products
spraying
adjusting
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EP99490030A
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German (de)
French (fr)
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EP0995361A1 (en
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Alain Maureaux
Jacques Bracquart
Edith Chauchard
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Bonduelle SA
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Bonduelle SA
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
    • A23N12/02—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for washing or blanching

Definitions

  • the invention relates to a method and a device for treatment.
  • food products such as, in particular, loaded vegetables impurities, for example, fertilizers and / or pesticides, as described in US 5,161,558.
  • the object of the present invention is to provide a method and a device for processing food products, such as, in particular vegetables, loaded with impurities, for example fertilizers and / or pesticides, which overcome the aforementioned drawbacks and facilitate the departure of said impurities.
  • impurities for example fertilizers and / or pesticides
  • Another object of the present invention is to provide a method and device for processing food products such as, especially vegetables loaded with impurities, for example, fertilizer and / or pesticides, which work continuously and are effective with a time of limited processing.
  • Another object of the present invention is to provide a method and device for processing food products such as, in particular vegetables loaded with impurities, for example fertilizer and / or pesticides, which allow a limitation of the consumption of liquid treatment.
  • food products such as, in particular vegetables loaded with impurities, for example fertilizer and / or pesticides, which allow a limitation of the consumption of liquid treatment.
  • Another object of the present invention is to provide a method and device for processing food products such as, in particular vegetables loaded with impurities, for example fertilizer and / or pesticides, which allow the departure of said impurities and simultaneously the blanching vegetables, while limiting energy consumed for this purpose and a decrease in the bleaching time for preserve the texture of the products and limit the loss of material.
  • impurities for example fertilizer and / or pesticides
  • the invention relates first of all to a treatment method food products, such as, in particular, loaded vegetables impurities, for example, fertilizers and / or pesticides.
  • They are, for example, spinach loaded with nitrates.
  • a flow of products is provided food, driven in particular continuously on a support 1.
  • Said flux has, for example, a thickness of 5 to 30 cm, especially 10 to 20 cm. It is, for example, substantially planar and oriented in a given direction of progression identified 2. In the rest of the text, this defines the concept of upstream and downstream.
  • a treatment liquid capable of taking charge said impurities.
  • these include, in particular, water.
  • the level of impurities present in said liquid is then adjusted. after watering then it is recirculated. We thus benefit from a process of fast and economical treatment with treatment liquid.
  • different successive watering stages marked A, B, C, we harvest, in different zones 3, 4, 5 known as deconcentration zones, the liquid loaded with impurities from each of the watering stages A, B, C and on respectively adjusts said level of impurities, zone by zone, before recirculation of the treatment.
  • deconcentration zones There are, for example, three successive stages of watering and three deconcentration zones.
  • Zone 5 located furthest downstream and that presenting the lowest level of impurities.
  • the liquid is recirculated from each of the deconcentration zones 3, 4, 5, for example respectively towards the watering stage A, B, C which it comes, as illustrated by the arrows marked 6.
  • Said impurity level is adjusted, in particular, by adding liquid coming from a downstream deconcentration zone 3, 4 and / or clean liquid, as illustrated by the arrow marked 7.
  • Said liquid supply clean is provided, in particular, at each of said zones 3, 4, 5 or only at the level of zone 5 furthest downstream.
  • said liquid treatment is possibly provided heated.
  • Use of heated liquid also allows, if desired, to obtain a bleaching of said products.
  • the treatment times are, in particular, from 30 sec to 6 min. They are adapted to the thickness of the flux. Advantageously, they should not not cause the cooking of said food products.
  • the temperature of the processing liquid is, for example, between 60 and 100 ° C.
  • the actual bleaching eventually takes place in the last watering step C. This then lasts, for example, 30 seconds at 2 minutes, at a temperature ranging from, in particular, 85 ° C to 95 ° C.
  • the invention also allows a reduction in the energy consumed. AT this end, we can also, if desired, recover the calories from the treatment evacuated to the sewer.
  • the temperature of said liquid is optionally adjusted. treatment according to the watering stage A, B, C in which it is used. The temperature of the last step is thus chosen, possibly, superior to others.
  • the clean liquid possibly used to make a intake in order to adjust the level of impurities is provided, for example, preheated.
  • said products are optionally cooled. after bleaching.
  • the entire treatment is carried out, for example, at pressure atmospheric.
  • the invention also relates to a device for setting work of the process described above.
  • it includes means 9 to water the flow of food products entrained on the support 1 of a treatment liquid, capable of taking charge of said impurities.
  • Said means for watering consist, in particular, of spray nozzles.
  • the device according to the invention also includes means 10 for adjusting the level of impurities present in the liquid treatment after watering and means 11 for recirculating said liquid treatment after adjusting its level of impurities.
  • Said support 1 consists, in particular, of a strip conveyor 12, provided in an enclosure not shown.
  • said device comprises successive sprinkler compartments A, B, C, provided with means for water 9, communicating with 3, 4, 5 deconcentration tanks for collect the liquid loaded with impurities from each respectively said compartments A, B, C.
  • Said means for adjusting the rate impurities are provided, in particular, for each of said tanks 3, 4, 5.
  • Said means for recirculating 11 are constituted, by example, of a pump and / or a conduit provided between the tanks devolution 3, 4, 5 and the sprinkling means 9 of the compartments A, B, vs.
  • Said means 10 for adjusting the level of impurities are consisting, in particular, of a clean liquid inlet pipe, at least provided at the level of tank 5 collecting the liquid from compartment C most downstream.
  • a liquid inlet duct may possibly be provided clean at each of said tanks 3, 4, 5.
  • Said means 10 for adjusting the level of impurities are further constituted, possibly, by said tanks 3, 4, 5 themselves, designed to allow communication of treatment liquid downstream tanks to the upstream tanks as illustrated by the arrows marked 13.
  • said tanks 3, 4, 5 are, in particular, provided contiguous and / or communicating by pouring downstream upstream. They are located, in particular, under each said compartment A, B, C from which it collects treatment liquid as illustrated by the arrows marked 14.
  • an orifice 15 drain is provided, for example, in the bottom of each of said tanks 3, 4, 5.
  • Said emptying can be controlled, possibly, by means of valves 16 cooperating with said tanks 3, 4, 5.
  • Said valves 16 may also play a role in adjusting the level of impurities.
  • Said means 11 for recirculating are provided, for example, between each compartment A, B, C and the corresponding tray 3, 4, 5.
  • the device according to the invention may further comprise means 17 for heating the treatment liquid. They are made up, in particular, a pipe 18 for supplying steam.
  • Said conduit 18 allows, for example, to adjust the temperature of the treatment liquid in each of said tanks 3, 4, 5. On can thus have a separately controlled temperature for each compartments A, B, C.
  • the invention furthermore possibly includes means cooling 19 of food products after laundering.
  • They are consisting, in particular of a cooling mat 20, provided in the open air and / or sprayed with a coolant, especially sprinkled water.
  • Said cooling mat 20 is, for example, driven continuously.
  • Said means for cooling 19 are further constituted, by example, of blowers 21 provided under said cooling mat, especially working in depression.
  • means 22 for unpacking the food flow could possibly be used. It is, for example, a spraying member 23 provided between said watering mat 12 and said cooling mat 20. It could also be, in particular, air ejection nozzles 24 under said cooling mat 20, for example provided between said blowers 21.
  • blowers 21 placed one behind the other in the direction of progression of flow 2.

Abstract

A process for the treatment of food products, especially vegetables containing impurities e.g. fertilizers and/or pesticides is new, and comprises: (a) providing a flow of food products on a support; (b) sprinkling the products with liquid treatment to remove the impurities; and (c) adjusting the impurity level present in the liquid treatment after sprinkling and recirculating it. An Independent claim is also included for a device for carrying out the above process comprising: (1) means for sprinkling the flow of food products on a support with a liquid treatment for removing the impurities; (2) means for adjusting the impurity level present in the liquid treatment after sprinkling; and (3) means for recirculating the liquid treatment after adjusting the impurity level.

Description

L'invention concerne un procédé et un dispositif de traitement de produits alimentaires tels que, notamment, des légumes chargés d'impuretés, par exemple, engrais et/ou pesticides, comme décrit dans US 5 161 558.The invention relates to a method and a device for treatment. food products such as, in particular, loaded vegetables impurities, for example, fertilizers and / or pesticides, as described in US 5,161,558.

Il s'agit, notamment, d'épinards chargés en nitrates.These include, in particular, spinach loaded with nitrates.

Toutefois, bien que plus particulièrement prévue pour de telles applications, elle pourra également être utlisée pour tout autre type de produits alimentaires.However, although more specifically intended for such applications, it can also be used for any other type of foodstuffs.

Actuellement, pour réaliser la dénitrification des épinards, il est connu des procédés discontinus selon lesquels les épinards sont plongés dans une cuve de lavage.Currently, to carry out the denitrification of spinach, it is known from discontinuous processes in which spinach is dipped in a washing tub.

Il est également connu d'utiliser un bain de lavage dans lequel les épinards circulent en continu, maintenus dans un support perméable.It is also known to use a washing bath in which spinach circulates continuously, maintained in a support permeable.

Toutefois, une telle solution présente de nombreux inconvénients. En effet, les temps de traitement sont longs. De plus, le bain de lavage se charge rapidement en nitrates ce qui peut conduire à des saturations.However, such a solution has many disadvantages. Indeed, the processing times are long. In addition, the bath quickly loads into nitrates which can lead to saturations.

Il est également à noter qu'en cas d'utilisation d'un tel procédé pour obtenir un blanchiment simultané des épinards grâce à l'utilisation d'un bain de lavage à haute température, le maintien de celle-ci entraíne une grande consommation d'énergie.It should also be noted that if such a device is used process for obtaining a simultaneous blanching of spinach using using a high temperature washing bath, maintaining it results in high energy consumption.

Le but de la présente invention est de proposer un procédé et un dispositif de traitement de produits alimentaires, tels que, notamment des légumes, chargés d'impuretés, par exemple engrais et/ou pesticides, qui pallient les inconvénients précités et facilitent le départ desdites impuretés.The object of the present invention is to provide a method and a device for processing food products, such as, in particular vegetables, loaded with impurities, for example fertilizers and / or pesticides, which overcome the aforementioned drawbacks and facilitate the departure of said impurities.

Un autre but de la présente invention est de proposer un procédé et un dispositif de traitement de produits alimentaires tels que, notamment des légumes chargés d'impuretés, par exemple, engrais et/ou pesticides, qui fonctionnent en continu et soient efficaces avec un temps de traitement limité.Another object of the present invention is to provide a method and device for processing food products such as, especially vegetables loaded with impurities, for example, fertilizer and / or pesticides, which work continuously and are effective with a time of limited processing.

Un autre but de la présente invention est de proposer un procédé et un dispositif de traitement de produits alimentaires tels que, notamment des légumes chargés d'impuretés, par exemple engrais et/ou pesticides, qui autorisent une limitation de la consommation de liquide de traitement.Another object of the present invention is to provide a method and device for processing food products such as, in particular vegetables loaded with impurities, for example fertilizer and / or pesticides, which allow a limitation of the consumption of liquid treatment.

Un autre but de la présente invention est de proposer un procédé et un dispositif de traitement de produits alimentaires tels que, notamment des légumes chargés d'impuretés, par exemple engrais et/ou pesticides, qui autorisent le départ desdites impuretés et simultanément le blanchiment des légumes, tout en permettant une limitation de l'énergie consommée à cette fin et une diminution du temps de blanchiment pour préserver la texture des produits et limiter les pertes de matière.Another object of the present invention is to provide a method and device for processing food products such as, in particular vegetables loaded with impurities, for example fertilizer and / or pesticides, which allow the departure of said impurities and simultaneously the blanching vegetables, while limiting energy consumed for this purpose and a decrease in the bleaching time for preserve the texture of the products and limit the loss of material.

D'autres buts et avantages de l'invention apparaítront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the invention will become apparent from during the description which follows which is given for information only and which is not intended to limit it.

L'invention concerne tout d'abord un procédé de traitement de produits alimentaires, tels que, notamment des légumes chargés d'impuretés, par exemple engrais et/ou pesticides, dans lequel :

  • on prévoit un flux dedits produits alimentaires, entraínés sur un support,
  • on arrose lesdits produits d'un liquide de traitement apte à se charger desdites impuretés,
  • on ajuste le taux d'impuretés présent dans ledit liquide après arrosage et on le recircule.
The invention relates first of all to a process for treating food products, such as, in particular vegetables loaded with impurities, for example fertilizers and / or pesticides, in which:
  • we provide a flow of food products, driven on a support,
  • said products are sprayed with a treatment liquid capable of taking charge of said impurities,
  • the level of impurities present in said liquid is adjusted after watering and it is recirculated.

L'invention concerne également un dispositif pour la mise en oeuvre du procédé décrit plus haut de traitement de produits alimentaires tels que, notamment des légumes chargés d'impuretés, par exemple engrais et/ou pesticides, comprenant :

  • des moyens pour arroser un flux de produits alimentaires entraínés sur un support d'un liquide de traitement, apte à se charger desdites impuretés,
  • des moyens pour ajuster le taux d'impuretés présent dans le liquide de traitement après arrosage,
  • des moyens pour recirculer le liquide de traitement après ajustement de son taux d'impuretés.
The invention also relates to a device for implementing the method described above for treating food products such as, in particular vegetables loaded with impurities, for example fertilizers and / or pesticides, comprising:
  • means for watering a flow of entrained food products on a support of a treatment liquid, capable of taking charge of said impurities,
  • means for adjusting the level of impurities present in the treatment liquid after watering,
  • means for recirculating the treatment liquid after adjusting its level of impurities.

L'invention sera mieux comprise à la lecture de la description suivante, accompagnée du dessin en annexe qui en fait partie intégrante et qui illustre de manière schématique un exemple de réalisation du dispositif de traitement conforme à l'invention.The invention will be better understood on reading the description following, accompanied by the attached drawing which forms an integral part thereof and which schematically illustrates an exemplary embodiment of the device treatment according to the invention.

L'invention concerne tout d'abord un procédé de traitement de produits alimentaires, tels que, notamment des légumes chargés d'impuretés, par exemple, engrais et/ou pesticides.The invention relates first of all to a treatment method food products, such as, in particular, loaded vegetables impurities, for example, fertilizers and / or pesticides.

Il s'agit, par exemple, d'épinards chargés de nitrates.They are, for example, spinach loaded with nitrates.

Toutefois, bien que plus particulièrement prévue pour de telles applications, elle pourra également être utilisée pour tout autre type de produits alimentaires.However, although more specifically intended for such applications, it can also be used for any other type of foodstuffs.

Comme illustré à la figure 1, on prévoit un flux dedits produits alimentaires, entraínés notamment en continu sur un support 1.As illustrated in Figure 1, a flow of products is provided food, driven in particular continuously on a support 1.

Ledit flux présente, par exemple, une épaisseur de 5 à 30 cm, notamment 10 à 20 cm. Il est, par exemple, sensiblement plan et orienté selon une direction de progression donnée repérée 2. Dans le reste du texte, celle-ci définit la notion d'amont et d'aval.Said flux has, for example, a thickness of 5 to 30 cm, especially 10 to 20 cm. It is, for example, substantially planar and oriented in a given direction of progression identified 2. In the rest of the text, this defines the concept of upstream and downstream.

Afin que les produits alimentaires soient débarrassés de leurs impuretés, on arrose ceux-ci d'un liquide de traitement apte à se charger desdites impuretés. Il s'agit, notamment, d'eau.So that food products are rid of their impurities, these are sprayed with a treatment liquid capable of taking charge said impurities. These include, in particular, water.

On ajuste alors le taux d'impuretés présent dans ledit liquide après arrosage puis on le recircule. On bénéficie ainsi d'un procédé de traitement rapide et économique en liquide de traitement.The level of impurities present in said liquid is then adjusted. after watering then it is recirculated. We thus benefit from a process of fast and economical treatment with treatment liquid.

Selon le mode de réalisation illustré, on prévoit différentes étapes successives d'arrosage, repérées A, B, C, on récolte, dans différentes zones 3, 4, 5 dites zones de déconcentration, le liquide chargé en impuretés provenant respectivement de chacune des étapes d'arrosage A, B, C et on ajuste ledit taux d'impuretés, zone par zone, avant recirculation du liquide de traitement. On prévoit, par exemple, trois étapes successives d'arrosage et trois zones de déconcentration.According to the illustrated embodiment, different successive watering stages, marked A, B, C, we harvest, in different zones 3, 4, 5 known as deconcentration zones, the liquid loaded with impurities from each of the watering stages A, B, C and on respectively adjusts said level of impurities, zone by zone, before recirculation of the treatment. There are, for example, three successive stages of watering and three deconcentration zones.

La zone 5 se trouvant le plus en aval et celle présentant le taux d'impuretés le plus faible.Zone 5 located furthest downstream and that presenting the lowest level of impurities.

Selon ce mode de réalisation, après ajustement du taux d'impuretés, on recircule le liquide de chacune des zones de déconcentration 3, 4, 5, par exemple respectivement vers l'étape d'arrosage A, B, C dont il provient, comme illustré par les flèches repérées 6.According to this embodiment, after adjusting the rate impurities, the liquid is recirculated from each of the deconcentration zones 3, 4, 5, for example respectively towards the watering stage A, B, C which it comes, as illustrated by the arrows marked 6.

On ajuste ledit taux d'impuretés, notamment, par apport de liquide en provenance d'une zone 3, 4 de déconcentration aval et/ou de liquide propre, comme illustré par la flèche repérée 7. Ledit apport en liquide propre est prévu, notamment, au niveau de chacune desdites zones 3, 4, 5 ou uniquement au niveau de la zone 5 la plus en aval.Said impurity level is adjusted, in particular, by adding liquid coming from a downstream deconcentration zone 3, 4 and / or clean liquid, as illustrated by the arrow marked 7. Said liquid supply clean is provided, in particular, at each of said zones 3, 4, 5 or only at the level of zone 5 furthest downstream.

En cas de risque de débordement et/ou de taux trop importants d'impuretés dans l'une des zones 3, 4, 5, on pourrait évacuer ledit liquide vers l'égout, comme illustré par les flèches repérées 8.In case of risk of overflow and / or too high a rate important impurities in one of zones 3, 4, 5, we could evacuate said liquid to the drain, as shown by the arrows marked 8.

Afin de favoriser l'élimination des impuretés, ledit liquide de traitement est éventuellement prévu chauffé. L'utilisation de liquide chauffé permet en outre, si désiré, d'obtenir un blanchiment desdits produits.In order to promote the elimination of impurities, said liquid treatment is possibly provided heated. Use of heated liquid also allows, if desired, to obtain a bleaching of said products.

Les temps de traitement sont, notamment, de 30 sec à 6 mn. Ils sont adaptés à l'épaisseur du flux. De manière avantageuse, ils ne doivent pas entraíner la cuisson desdits produits alimentaires. La température du liquide de traitement se situe, par exemple, entre 60 et 100 °C.The treatment times are, in particular, from 30 sec to 6 min. They are adapted to the thickness of the flux. Advantageously, they should not not cause the cooking of said food products. The temperature of the processing liquid is, for example, between 60 and 100 ° C.

Le blanchiment proprement dit a lieu éventuellement dans la dernière étape d'arrosage C. Celle-ci dure alors, par exemple, 30 secondes à 2 minutes, à une température allant de, notamment, 85 °C à 95 °C.The actual bleaching eventually takes place in the last watering step C. This then lasts, for example, 30 seconds at 2 minutes, at a temperature ranging from, in particular, 85 ° C to 95 ° C.

Grâce à la recirculation du liquide de traitement, on constate que l'invention permet en outre une diminution de l'énergie consommée. A cette fin, on pourra également, si désiré, récupérer les calories du liquide de traitement évacué vers l'égout.Thanks to the recirculation of the treatment liquid, that the invention also allows a reduction in the energy consumed. AT this end, we can also, if desired, recover the calories from the treatment evacuated to the sewer.

On adapte éventuellement la température dudit liquide de traitement en fonction de l'étape d'arrosage A, B, C dans laquelle il est utilisé. La température de la dernière étape est ainsi choisie, éventuellement, supérieure aux autres.The temperature of said liquid is optionally adjusted. treatment according to the watering stage A, B, C in which it is used. The temperature of the last step is thus chosen, possibly, superior to others.

Le liquide propre éventuellement utilisé pour réaliser un apport afin d'ajuster le taux d'impuretés est prévu, par exemple, préchauffé.The clean liquid possibly used to make a intake in order to adjust the level of impurities is provided, for example, preheated.

On refroidit en outre, éventuellement, lesdits produits alimentaires après blanchiment.In addition, said products are optionally cooled. after bleaching.

Pour faciliter cette étape, on pourra alors notamment, décompacter le flux de produits et/ou diminuer son épaisseur au moins au moment de la transition entre le blanchiment et le refroidissement.To facilitate this step, we can then in particular, unpack the product flow and / or reduce its thickness at least at least time of transition between bleaching and cooling.

L'ensemble du traitement est réalisé, par exemple, à pression atmosphérique.The entire treatment is carried out, for example, at pressure atmospheric.

L'invention concerne également un dispositif pour la mise en oeuvre du procédé décrit plus haut. Il comprend tout d'abord des moyens 9 pour arroser le flux de produits alimentaires entraínés sur le support 1 d'un liquide de traitement, apte à se charger desdites impuretés. Lesdits moyens pour arroser sont constitués, notamment, de buses d'aspersion.The invention also relates to a device for setting work of the process described above. First of all, it includes means 9 to water the flow of food products entrained on the support 1 of a treatment liquid, capable of taking charge of said impurities. Said means for watering consist, in particular, of spray nozzles.

Le dispositif conforme à l'invention comprend également des moyens 10 pour ajuster le taux d'impuretés présent dans le liquide de traitement après arrosage et des moyens 11 pour recirculer ledit liquide de traitement après ajustement de son taux d'impuretés.The device according to the invention also includes means 10 for adjusting the level of impurities present in the liquid treatment after watering and means 11 for recirculating said liquid treatment after adjusting its level of impurities.

Ledit support 1 est constitué, notamment, d'une bande transporteuse 12, prévue dans une enceinte non représentée.Said support 1 consists, in particular, of a strip conveyor 12, provided in an enclosure not shown.

Selon le mode de réalisation illustré, ledit dispositif comprend des compartiments successifs d'arrosage A, B, C, munis dedits moyens pour arroser 9, communiquant avec des bacs 3, 4, 5 de déconcentration pour récolter le liquide chargé en impuretés provenant respectivement de chacun desdits compartiments A, B, C. Desdits moyens pour ajuster 10 le taux d'impuretés sont prévus, notamment, pour chacun desdits bacs 3, 4, 5.According to the illustrated embodiment, said device comprises successive sprinkler compartments A, B, C, provided with means for water 9, communicating with 3, 4, 5 deconcentration tanks for collect the liquid loaded with impurities from each respectively said compartments A, B, C. Said means for adjusting the rate impurities are provided, in particular, for each of said tanks 3, 4, 5.

Il s'agit, par exemple de trois compartiments A, B, C, et de trois bacs 3, 4, 5. These are, for example, three compartments A, B, C, and three trays 3, 4, 5.

Lesdits moyens pour recirculer 11 sont constitués, par exemple, d'une pompe et/ou d'un conduit prévu entre les bacs de déconcentration 3, 4, 5 et les moyens d'arrosage 9 des compartiments A, B, C.Said means for recirculating 11 are constituted, by example, of a pump and / or a conduit provided between the tanks devolution 3, 4, 5 and the sprinkling means 9 of the compartments A, B, vs.

Lesdits moyens 10 pour ajuster le taux d'impuretés sont constitués,notamment, d'un conduit d'arrivée de liquide propre, au moins prévu au niveau du bac 5 récoltant le liquide du compartiment C le plus en aval. Il pourra éventuellement être prévu undit conduit d'arrivée de liquide propre au niveau de chacun desdits bacs 3, 4, 5.Said means 10 for adjusting the level of impurities are consisting, in particular, of a clean liquid inlet pipe, at least provided at the level of tank 5 collecting the liquid from compartment C most downstream. A liquid inlet duct may possibly be provided clean at each of said tanks 3, 4, 5.

Lesdits moyens 10 pour ajuster le taux d'impuretés sont constitués en outre, éventuellement, par lesdits bacs 3, 4, 5 eux-mêmes, prévus aptes à permettre une communication de liquide de traitement des bacs aval vers les bacs amont comme illustrés par les flèches repérées 13.Said means 10 for adjusting the level of impurities are further constituted, possibly, by said tanks 3, 4, 5 themselves, designed to allow communication of treatment liquid downstream tanks to the upstream tanks as illustrated by the arrows marked 13.

Pour cela, lesdits bacs 3, 4, 5 sont, notamment, prévus contigüs et/ou communiquant par déversement de l'aval vers l'amont. Ils sont situés, notamment, sous chaque dit compartiment A, B, C dont il récolte le liquide de traitement comme illustré par les flèches repérées 14.For this, said tanks 3, 4, 5 are, in particular, provided contiguous and / or communicating by pouring downstream upstream. They are located, in particular, under each said compartment A, B, C from which it collects treatment liquid as illustrated by the arrows marked 14.

Afin d'éviter le débordement desdits bacs 3, 4, 5, un orifice 15 de vidange est prévu, par exemple, dans le fond de chacun desdits bacs 3, 4, 5. Ladite vidange pourra être contrôlée, éventuellement, grâce à des vannes 16 coopérant avec lesdits bacs 3, 4, 5. Lesdites vannes 16 pourront également jouer un rôle dans l'ajustement du taux d'impuretés.To prevent overflow of said tanks 3, 4, 5, an orifice 15 drain is provided, for example, in the bottom of each of said tanks 3, 4, 5. Said emptying can be controlled, possibly, by means of valves 16 cooperating with said tanks 3, 4, 5. Said valves 16 may also play a role in adjusting the level of impurities.

Desdits moyens 11 pour recirculer sont prévus, par exemple, entre chaque compartiment A, B, C et le bac 3, 4, 5 correspondant.Said means 11 for recirculating are provided, for example, between each compartment A, B, C and the corresponding tray 3, 4, 5.

Si l'on souhaite blanchir simultanément lesdits produits alimentaires, le dispositif conforme à l'invention pourra en outre comprendre des moyens 17 de chauffage du liquide de traitement. Ils sont constitués, notamment, d'un conduit 18 d'apport de vapeur.If one wishes to whiten said products simultaneously food, the device according to the invention may further comprise means 17 for heating the treatment liquid. They are made up, in particular, a pipe 18 for supplying steam.

Ledit conduit 18 permet, par exemple, de régler la température du liquide de traitement dans chacun desdits bacs 3, 4, 5. On peut ainsi avoir une température contrôlée de manière distincte pour chacun des compartiments A, B, C.Said conduit 18 allows, for example, to adjust the temperature of the treatment liquid in each of said tanks 3, 4, 5. On can thus have a separately controlled temperature for each compartments A, B, C.

L'invention comprend en outre, éventuellement, des moyens de refroidissement 19 des produits alimentaires après blanchiment. Ils sont constitués, notamment d'un tapis de refroidissement 20, prévu à l'air libre et/ou arrosé d'un liquide de refroidissement, notamment de l'eau aspergée. Ledit tapis de refroidissement 20 est, par exemple, entraíné en continu.The invention furthermore possibly includes means cooling 19 of food products after laundering. They are consisting, in particular of a cooling mat 20, provided in the open air and / or sprayed with a coolant, especially sprinkled water. Said cooling mat 20 is, for example, driven continuously.

Lesdits moyens pour refroidir 19 sont en outre constitués, par exemple, de souffleries 21 prévues sous ledit tapis de refroidissement, notamment travaillant en dépression.Said means for cooling 19 are further constituted, by example, of blowers 21 provided under said cooling mat, especially working in depression.

Afin de faciliter le refroidissement, des moyens 22 pour décompacter le flux de produits alimentaires pourront éventuellement être utilisés. Il s'agit, par exemple, d'un organe 23 d'aspersion prévu entre ledit tapis d'arrosage 12 et ledit tapis de refroidissement 20. Il pourra encore s'agir, notamment, de buses 24 d'éjection d'air sous ledit tapis de refroidissement 20, par exemple prévues entre lesdites souffleries 21.In order to facilitate cooling, means 22 for unpacking the food flow could possibly be used. It is, for example, a spraying member 23 provided between said watering mat 12 and said cooling mat 20. It could also be, in particular, air ejection nozzles 24 under said cooling mat 20, for example provided between said blowers 21.

Il est prévu, notamment, deux dites souffleries 21 placées l'une derrière l'autre dans le sens de progression du flux 2.It is planned, in particular, two so-called blowers 21 placed one behind the other in the direction of progression of flow 2.

Afin de faciliter le refroidissement, on pourra encore diminuer l'épaisseur du flux de produits alimentaires, par exemple en utilisant une vitesse d'entraínement plus rapide pour ledit tapis de refroidissement 20 que pour ledit tapis d'arrosage 12.In order to facilitate cooling, we can further reduce the thickness of the food flow, for example using a faster drive speed for said cooling mat 20 than for said sprinkler mat 12.

Claims (16)

  1. A method for processing food products, such as, notably, vegetables loaded with impurities, for example fertilisers and/or pesticides, wherein:
    a flow of said food products is provided, driven on a support (1 ),
    said products are sprayed with a processing liquid, capable of being loaded with said impurities,
    the impurity ratio present in said processing liquid is adjusted after spraying and it is re-circulated.
  2. A method according to claim 1, wherein different successive spraying steps (A, B, C) are provided, the liquid loaded with impurities, coming from respectively each spraying steps (A, B, C), is collected in different so-called de-concentration zones (3, 4, 5) and said impurity ratio is adjusted, for every zone, before re-circulating the processing liquid.
  3. A method according to claim 2, wherein the liquid from each de-concentration zone (3, 4, 5) is re-circulated respectively towards the spraying step (A, B, C) wherefrom it originates, after adjusting its impurity ratio.
  4. A method according to claim 2, wherein said impurity ratio is adjusted by adding liquid from a downstream de-concentration zone and/or clean liquid.
  5. A method according to claim 2, wherein said processing liquid is provided as heated in order to bleach said food products simultaneously to spraying.
  6. A method according to claim 5, wherein the temperature of the processing liquid is adjusted in relation to the spraying step wherein it is used.
  7. A method according to claim 5, wherein said food products are cooled down after bleaching.
  8. A method according to claim 7, wherein the flow of products is de-compacted and/or its thickness is reduced at least at the transition between bleaching and cooling down.
  9. A device for implementing the method according to claim 1 for food products such as, notably, vegetables loaded with impurities, for example, fertilisers and/or pesticides, comprising:
    means (9) for spraying a flow of said food products driven on a support (1) of a processing liquid, capable of being loaded with said impurities,
    means (10) for adjusting the impurity ratio present in said processing liquid after spraying,
    means (11) for re-circulating the processing liquid after adjusting its impurity ratio.
  10. A device according to claim 9, comprising successive spraying compartments (A, B, C), fitted with said means for spraying (9), communicating with de-concentration tubs (3, 4, 5) to collect the liquid loaded with impurities, coming respectively from each of said compartments (A, B, C), said means for adjusting (10) the impurity ratio being provided in each of said tubs (3, 4, 5).
  11. A device according to claim 10, wherein said means (10) for adjusting the impurity ratio are composed of a clean liquid supply duct at least arranged at said tub (5) for collecting the liquid from the most downstream compartment C.
  12. A device according to claim 11, wherein said means (10) for adjusting the impurity ratio are composed moreover of said tubs (3, 4, 5) arranged capable of enabling the communication of the processing liquid from the downstream tubs to the upstream tubs.
  13. A device according to claim 10, wherein said means (10) for adjusting the impurity ratio are composed moreover of valves (16), co-operating with said tubs (3, 4, 5) and arranged capable of controlling their emptying.
  14. A device according to claim 10, wherein said re-circulation means (11) are provided between each compartment (A, B, C) and the corresponding tub (3, 4, 5).
  15. A device according to claim 9, comprising moreover means for heating the processing liquid for bleaching said products.
  16. A device according to claim 15, each comprising moreover means for cooling down the food products after bleaching.
EP99490030A 1998-10-23 1999-10-21 Process and device for the treatment of food products like, in particular, vegetables containing impurities, i.e. fertilizers and/or pesticides Expired - Lifetime EP0995361B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9813460A FR2784866B1 (en) 1998-10-23 1998-10-23 METHOD AND DEVICE FOR TREATMENT OF FOOD PRODUCTS SUCH AS, IN PARTICULAR VEGETABLES LOADED WITH IMPURITIES, FOR EXAMPLE, FERTILIZERS AND/OR PESTICIDES
FR9813460 1998-10-23

Publications (2)

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EP0995361A1 EP0995361A1 (en) 2000-04-26
EP0995361B1 true EP0995361B1 (en) 2003-12-03

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EP99490030A Expired - Lifetime EP0995361B1 (en) 1998-10-23 1999-10-21 Process and device for the treatment of food products like, in particular, vegetables containing impurities, i.e. fertilizers and/or pesticides

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EP (1) EP0995361B1 (en)
AT (1) ATE255335T1 (en)
DE (1) DE69913289T2 (en)
ES (1) ES2212507T3 (en)
FR (1) FR2784866B1 (en)
PT (1) PT995361E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2423865A1 (en) * 2011-12-21 2013-09-24 Productos Citrosol, S.A. Device for washing and disinfecting fruits and vegetables (Machine-translation by Google Translate, not legally binding)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983478A (en) * 1928-03-24 1934-12-04 Fmc Corp Method of and apparatus for cleaning fruit
US1944876A (en) * 1929-09-03 1934-01-30 Fmc Corp Washer
US5161558A (en) * 1991-05-28 1992-11-10 Torch Corporation Vibrating apparatus for cleaning floatable and light weight objects

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Publication number Publication date
PT995361E (en) 2004-04-30
ES2212507T3 (en) 2004-07-16
EP0995361A1 (en) 2000-04-26
DE69913289T2 (en) 2004-10-14
FR2784866B1 (en) 2000-12-15
DE69913289D1 (en) 2004-01-15
FR2784866A1 (en) 2000-04-28
ATE255335T1 (en) 2003-12-15

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